Made of aluminum alloy, the surface is anodized, no fading, no rust, durable; The furniture legs protect your floor from scratching and reduce noise when moving the furniture. Heavy duty aluminum alloy legs are strong enough to support furniture and help elevate the height of various types of furniture. Screw hole is 10mm in size, suitable for sofas, cabinets, coffee tables, beds, bathroom cabinets, dining tables, etc. Height can be adjusted through rotation of the base, which effectively solves the problem of shaking caused by uneven ground. Adjustable range is 0-8mm. Size Chart: Diameter: 5cm / 1.97 inch 6cm Adjustable height: 5.6-6.4cm / 2.20-2.52 inch 8cm Adjustable height: 7.6-8.4cm / 2.99-3.31 inch 10cm Adjustable height: 9.6-10.4cm / 3.78-4.09 inch 12cm Adjustable height: 11.6-12.4cm / 4.57-4.88 inch 15cm Adjustable height: 14.6-15.4cm / 5.75-6.06 inch 18cm Adjustable height: 17.6-18.4cm / 6.93-7.24 inch 20cm Adjustable height: 19.6-20.4cm / 7.72-8.03 inch 25cm Adjustable height: 24.6-25.4cm / 9.69-10.00 inch Package Includes: 4 Sofa Legs Note: Please allow slight errors due to manual measurement and different monitors.